Worst air pollution Mölndal, today and tomorrow
Today (20 September): Air quality in Mölndal is fair. AQI, PM2.5, and PM10 are fair; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (PM2.5: 25.2/100).
Tomorrow (21 September 2026): Air quality in Mölndal is good. AQI improves to good; PM2.5 decreases to good; PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 AM (O3: 12.7/100). Airmine updates local air quality forecasts four times daily.
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Mölndal's air quality is generally good by Swedish and European standards, with only occasional local peaks in pollutant levels. Emissions locally trace mainly to pharmaceuticals and tech and the traffic passing through the town centre. The natural airflow associated with the Mölndalsån river valley works in the area's favour for keeping pollutant levels down. As a result, Mölndal rarely records air quality readings that would concern most residents.
Today - 20 September | Pollution peaks at 09:00
AQI:
Fair
25.2/100
PM2.5 (fine particles):
Fair
25.2/100
PM10 (coarse particles):
Fair
21.2/100
NO2 (nitrogen dioxide):
Good
4.2/100
O3 (ozone):
Good
12.6/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
1.9/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 02:00
AQI:
Good
12.7/100
PM2.5 (fine particles):
Good
6.2/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
10.0/100
O3 (ozone):
Good
12.7/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
1.7/100
Pollen forecast in Mölndal
View pollen forecastSports venues in Mölndal
Frequently Asked Questions
Is air quality bad in Mölndal right now?
On 20 September 2026, overall air quality in Mölndal is fair. AQI is the main air quality indicator at 25.2/100. Pollution peaks around 9:00 AM (PM2.5: 25.2/100).
Will air quality be worse tomorrow in Mölndal?
On 21 September 2026, air quality conditions in Mölndal will be better than today, with AQI forecast at good at 12.7/100. Pollution peaks around 2:00 AM (O3: 12.7/100).
When is air pollution at its worst in Mölndal?
How does air quality change throughout the year in Mölndal? Midwinter is generally the least favourable period, as still air and cold temperatures allow local pollutants to build up rather than clear. Spring usually marks a turning point, with more active weather systems reducing how often pollutants can accumulate. Air quality is typically strongest in summer, helped by more wind and sunshine, though still days can occasionally push up ozone levels. By October and November, cooling air and calmer evenings start to mirror the patterns that intensify further in winter. The comparatively mild southern Swedish climate means these seasonal swings are usually less pronounced than further north.
Are air quality levels in Mölndal based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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